| Monreale to Opwijk | 995.11 mi (1,601.47 km) |
| Monreale to Ostend | 1,039.08 mi (1,672.24 km) |
| Monreale to Oud-Heverlee | 976.72 mi (1,571.88 km) |
| Monreale to Oud-Turnhout | 999.77 mi (1,608.97 km) |
| Monreale to Oudenaarde | 1,001.29 mi (1,611.42 km) |
| Monreale to Oudenburg | 1,034.72 mi (1,665.22 km) |
| Monreale to Oupeye | 949.34 mi (1,527.81 km) |
| Monreale to Overijse | 976.54 mi (1,571.59 km) |
| Monreale to Overpelt | 985.22 mi (1,585.56 km) |
| Monreale to Paal | 978.96 mi (1,575.48 km) |
| Monreale to Peer | 979.31 mi (1,576.05 km) |
| Monreale to Pepinster | 937.21 mi (1,508.29 km) |
| Monreale to Peruwelz | 982.22 mi (1,580.74 km) |
| Monreale to Perwez | 960.93 mi (1,546.47 km) |
| Monreale to Philippeville | 941.25 mi (1,514.80 km) |
